10985743656 has 24 divisors (see below), whose sum is σ = 29753055930. Its totient is φ = 3661914528.

The previous prime is 10985743597. The next prime is 10985743687. The reversal of 10985743656 is 65634758901.

10985743656 is a `hidden beast` number, since 1 + 0 + 9 + 8 + 574 + 3 + 65 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6696803556 + 4288940100 = 81834^2 + 65490^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76289815 + ... + 76289958.

Almost surely, 2^10985743656 is an apocalyptic number.

It is an amenable number.

10985743656 is an abundant number, since it is smaller than the sum of its proper divisors (18767312274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10985743656 is a wasteful number, since it uses less digits than its factorization.

10985743656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152579785 (or 152579778 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 10985743656 in words is "ten billion, nine hundred eighty-five million, seven hundred forty-three thousand, six hundred fifty-six".